import pandas as pd
list = [[21,33,12],[23,545,66],[11,22,33],[88,77,66]]
index = ['网盟','李珊','招生','刘辉']
columns = ['语文','数学','英语']
df = pd.DataFrame(list, index, columns)
print(df)
df.loc['王琳'] = [44,33,22]
print(df)
df.insert(2,'政治',[85,88,33,44,11])
print(df)